71516252 has 12 divisors (see below), whose sum is σ = 125217456. Its totient is φ = 35739840.

The previous prime is 71516243. The next prime is 71516273. The reversal of 71516252 is 25261517.

It is a super-2 number, since 2×71516252² = 10229148600255008, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8177 + ... + 14487.

It is an arithmetic number, because the mean of its divisors is an integer number (10434788).

Almost surely, 2^71516252 is an apocalyptic number.

It is an amenable number.

71516252 is a deficient number, since it is larger than the sum of its proper divisors (53701204).

71516252 is a wasteful number, since it uses less digits than its factorization.

71516252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9148 (or 9146 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 71516252 is about 8456.7282089470. The cubic root of 71516252 is about 415.0829698144.

Adding to 71516252 its reverse (25261517), we get a palindrome (96777769).

The spelling of 71516252 in words is "seventy-one million, five hundred sixteen thousand, two hundred fifty-two".